Stainless steel parts demand high corrosion resistance, tight tolerance and fine surface finish. We keep 12+ stainless grades in stock, offer milling/turning compound machining, with a standard tolerance of ±0.002mm and mature passivation and electropolishing processes.
Capabilities
Stainless steel tends to stick to the tool, warp, and show batch-to-batch surface variation — the corresponding controls are as follows.
Part type showcase
The following are common stainless part examples; part types not listed can also be made as long as you have drawings.
Common stainless plates and structural parts in 304 / 316, including front-face cavities and hole patterns.
Shafts, bushings and fittings — rotational parts completed by combined turning and milling.
Precision parts for medical and beauty devices; material and surface finish selected per medical requirements.
For more part types and material grades, see Capabilities.
Material
The following are our stocked stainless grades; for grades not listed, please send drawings to confirm.
| Grade | Typical properties | Typical parts | Tolerance | surface finishing |
|---|---|---|---|---|
| 304 | General-purpose austenitic, good corrosion resistance, prone to built-up edge | Equipment structural parts, pipe fittings, fasteners | ±0.01 | Passivation, polishing, electropolishing |
| 304L | Low carbon, good weldability | Welded structural parts, food-grade parts | ±0.01 | Passivation, pickling |
| 316 | Molybdenum-bearing, better pitting resistance than 304 | Chemical / medical structural parts, valve bodies | ±0.01 | Passivation, polishing |
| 316L | Ultra-low carbon, medical-grade corrosion resistance | Medical device parts, precision bushings | ±0.002 | Passivation, electropolishing |
| 303 | Free-machining stainless steel, high efficiency | Shafts, nuts, fittings and other turned parts | ±0.01 | Passivation |
| 321 | Titanium-stabilised, resists intergranular corrosion | High-temperature structural parts, aerospace parts | ±0.01 | Passivation |
| 310S | Resists high-temperature oxidation | Furnace parts, high-temperature tooling | ±0.02 | Passivation |
| 2Cr13/420 | Martensitic, hardenable, mild corrosion resistance | Mould components, valve plates, shafts | ±0.002 | Hardening + tempering, passivation, polishing |
| 3Cr13 | Martensitic, harder than 2Cr13 | Cutting tools, mould parts, medical tools | ±0.002 | Hardening, passivation, mirror polishing |
| 430/1Cr17 | Ferritic, good thermal conductivity, low cost | Decorative parts, appliance parts, corrosion-resistant plates | ±0.02 | Brushing, passivation |
| 17-4PH | Precipitation hardening, high strength and corrosion resistance | High-strength structural parts, valve spools, shafts | ±0.002 | Age hardening, passivation |
| 2205 | Duplex steel combining strength and corrosion resistance | High-load corrosion-resistant structural parts | ±0.01 | Passivation |
Tolerance in mm; values are the standard stably achievable range. Critical dimensions follow drawing tolerances. For grades not listed, please send drawings.
FAQ
Standard ±0.002mm is stably achievable; critical dimensions follow drawing tolerances, with CMM + 2.5D vision double inspection.
Medical-grade materials such as 316L, electropolished or passivated, executed per food/medical industry requirements, with critical-dimension inspection reports supplied with the shipment.
Cutting parameters and tools are selected per grade, with custom workholding; thin-wall and slender parts use dedicated anti-warp processes, locked in after first-article sign-off.
Send us your drawings for a quote within 24 hours, including process advice; prototyping is typically 3–7 days, batch per production schedule, confirmed lead times are met.
Other capabilities:Aluminium Parts Machining · CNC Machining · Automation Parts Machining · Custom / Non-standard Parts
Request a Quote
STEP / STP / IGES / DWG / DXF / PDF and other formats accepted. Tell us the quantity and required date, and we will come back with process advice and a quotation.
